CN203645907U - Flexible printed circuit board - Google Patents
Flexible printed circuit board Download PDFInfo
- Publication number
- CN203645907U CN203645907U CN201320616998.9U CN201320616998U CN203645907U CN 203645907 U CN203645907 U CN 203645907U CN 201320616998 U CN201320616998 U CN 201320616998U CN 203645907 U CN203645907 U CN 203645907U
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- Prior art keywords
- linkage section
- circuit board
- flexible circuit
- span
- functional unit
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Abstract
The utility model relates to a flat panel display technology, especially relates to a flexible printed circuit board, which is connected with a first functional unit. The flexible printed circuit board at least comprises a first connecting segment and a second connecting segment, which are adjacent to each other, and are electrically connected together. The first connecting segment is connected with the first functional unit, and the span of one end of the second connecting segment close to the first connecting segment along a first direction is smaller than the span of one end of the first connecting segment close to the second connecting segment along the first direction.
Description
Technical field
The utility model relates to technical field of flat panel display, relates in particular to a kind of flexible circuit board.
Background technology
Flexible printed circuit board (Flexible Printed Circuit Board) is called again flexible electric circuit board, a kind of take mylar or polyimides as base material, by be etched on Copper Foil, form that circuit makes there is height reliability, the printed circuit of excellent flexibility.It has advantages of that many rigid printed circuit boards do not possess.For example it can free bend, coiling, folding, can require to arrange arbitrarily according to space layout, and mobile and flexible arbitrarily at three dimensions, thereby reach integrated that components and parts assembling is connected with wire.Utilize FPC can greatly dwindle the volume of electronic product, be suitable for the needs of electronic product to high density, miniaturization, highly reliable future development.Therefore, FPC is widely used on the fields such as space flight, military affairs, mobile communication, laptop computer, computer peripheral equipment, PDA, digital camera or electronic product.
FPC have one side, two-sided and multi-layer sheet point.The base material adopting is take polyimide copper clad lamination as main.This kind of material thermal resistance is high, good stability of the dimension, forms final products with the coverlay that has mechanical protection and good electrical insulation property concurrently by compacting.The top layer of two-sided, multilayer printed wiring board and inner conductor are realized the electrical connection of ectonexine circuit by metallization.The material that forms FPC has insulating substrate, adhesive, metal conductor layer (Copper Foil), cover layer and supporting material etc.
But, for example, in the back segment packaging process of electronic product (liquid crystal display module), as shown in Figure 1, one end of FPC10 is electrically connected by two-sided conducting resinl and display unit 20, and the other end is connected with mainboard 30 (or chip) by two-sided conducting resinl.In subsequent treatment process, inevitably can touch FPC10, make FPC10 occur bending or distortion, and then make the FPC10 edge being electrically connected with display unit 20 or mainboard 30 easily occur peeling off, even cause local shedding, affect the performance of electronic product.
Utility model content
In view of this, the utility model provides a kind of flexible circuit board that is conducive to improve electronic product performance.
The described flexible circuit board that the utility model provides, be used for connecting the first functional unit, it at least comprises one first linkage section adjacent and that be electrical connected and one second linkage section, described the first linkage section is for being connected with described the first functional unit, and on described the second linkage section, the span in a first direction of one end of contiguous described the first linkage section is less than one end that described the first linkage section is close to described the second linkage section span on described first direction.
In the described flexible circuit board that the utility model provides, described flexible circuit board also comprises the 3rd linkage section, described the 3rd linkage section is electrical connected by described the second linkage section and described the first linkage section, described the 3rd linkage section is for being connected with one second functional unit, and on described the second linkage section, the span in a first direction of one end of contiguous described the 3rd linkage section is less than one end that described the 3rd linkage section is close to described the second linkage section span on described first direction.
In the described flexible circuit board that the utility model provides, described the first linkage section, the second linkage section and the 3rd linkage section structure that is formed in one, the span of one end that described the second linkage section arbitrary span is in a first direction less than described the first linkage section and contiguous described the second linkage section of the 3rd linkage section respectively on described first direction.
Described the second linkage section has the first opposing side and the second side along second direction, on described the first side and the second side, reduced gradually along first direction elder generation by the distance between two lines that cut through described first direction and the definite plane of second direction, then increase gradually, described the second linkage section along the minimum span on first direction be described the second linkage section along on first direction maximum span 1/2.
In the described flexible circuit board that the utility model provides, described the second linkage section also has opposing first surface and second surface, the graphics area that described first surface is cut perpendicular to first direction and the determined plane of second direction first reduces gradually, then increases gradually.
In the described flexible circuit board that the utility model provides, the material that forms described flexible base, board at least comprises insulated base material layer, metal level and cover layer, described metal level is between described insulated base material layer and described cover layer, and described the first functional unit and described the second functional unit are by described metal level and the electrical connection of described flexible circuit board.
The another kind of flexible circuit board that the utility model provides, be used for connecting the first functional unit, it at least comprises one first linkage section adjacent and that be electrical connected and one second linkage section, described the first linkage section is for being connected with described the first functional unit, and the ductility of described the second linkage section is greater than respectively the ductility of described the first linkage section and the 3rd linkage section.
In the another kind of flexible circuit board that the utility model provides, described flexible circuit board also comprises the 3rd linkage section, described the 3rd linkage section is electrical connected by described the second linkage section and described the first linkage section, described the 3rd linkage section is for being connected with one second functional unit, and the span of one end that on described the second linkage section, one end of contiguous described the first linkage section is less than contiguous described the second linkage section of described the first linkage section on described third direction, the span of one end that on described the second linkage section, the span of one end of contiguous described the 3rd linkage section on third direction is less than contiguous described the second linkage section of described the 3rd linkage section on described third direction, described the first linkage section, the second linkage section and the 3rd linkage section structure that is formed in one, the material that forms described flexible base, board at least comprises insulated base material layer, metal level and cover layer, described metal level is between described insulated base material layer and described cover layer, described the first functional unit and described the second functional unit are by described metal level and the electrical connection of described flexible circuit board.
In the another kind of flexible circuit board that the utility model provides, on described the first linkage section and the 3rd linkage section, be also coated with respectively hard functional layer, the thickness of described hard functional layer is more than or equal to the thickness at arbitrary place on the second linkage section.
In the another kind of flexible circuit board that the utility model provides, described the first linkage section reduces gradually along the thickness of fourth direction, the thickness of described the second linkage section is the minimum thickness of described the first linkage section along fourth direction, the even thickness setting of described the second linkage section, described the first linkage section is described the second linkage section along 1/4 of the length of fourth direction along the length of fourth direction.
In the flexible circuit board that the utility model provides, due in a first direction, the second linkage section has with respect to the first linkage section and the less span of the second linkage section, can sustain the stress producing because of bending, therefore, can reduce the suffered stress in junction of described the first functional unit and described the first linkage section, and then can prevent that the first functional unit from peeling off or local shedding from described flexible circuit board, improve the performance of electronic product.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the connection diagram of flexible circuit board of the prior art;
The front view of the flexible circuit board connected mode of the first execution mode that Fig. 2 provides for the utility model;
Fig. 3 is the front view of the flexible circuit board shown in Fig. 2;
Fig. 4 is the sectional view of the flexible circuit board shown in Fig. 3 along A-A ' direction;
The front view of the flexible circuit board of the second execution mode that Fig. 5 provides for the utility model;
Fig. 6 is the stereogram of the flexible circuit board shown in Fig. 5;
The stereogram of the flexible circuit board of the third execution mode that Fig. 7 provides for the utility model;
Fig. 8 is the sectional view of the flexible circuit board shown in Fig. 7 along B-B ' direction.
Embodiment
For the flexible circuit board that explanation the utility model provides, be described in detail below in conjunction with Figure of description and explanatory note.
The flexible circuit board that the utility model provides is for connecting the first functional unit, it at least comprises one first linkage section adjacent and that be electrical connected and one second linkage section, described the first linkage section is for being connected with described the first functional unit, and on described the second linkage section, the span in a first direction of one end of contiguous described the first linkage section is less than one end that described the first linkage section is close to described the second linkage section span on described first direction.Described flexible circuit board also comprises the 3rd linkage section, for being connected with one second functional unit, and the span of one end that on described the second linkage section, one end of contiguous described the 3rd linkage section span is in a first direction less than contiguous described the second linkage section of described the 3rd linkage section on described first direction, preferably, the span of one end that described the second linkage section arbitrary span is in a first direction less than contiguous described the second linkage section of described the first linkage section and the 3rd linkage section respectively on described first direction, described first direction is perpendicular to the closure of described the first functional unit and described flexible circuit board.
As shown in Figures 2 and 3, the schematic diagram of the flexible circuit board 100 of the first execution mode providing for the utility model, described flexible circuit board 100 is for connecting the first functional unit 200 and the second functional unit 300, described flexible circuit board 100 comprises the first linkage section 101, the second linkage section 102 and the 3rd linkage section 103, described the first linkage section 101 second linkage sections 102 are adjacent and be electrical connected, described the 3rd linkage section 103 is electrical connected with described the first linkage section 101 by described the second linkage section 102, described the first linkage section 101 is for being connected with described the first functional unit 200, described the 3rd linkage section 103 is for being connected with described the second functional unit 300, described flexible circuit board 100 bends by described the second linkage section 102.
In present embodiment, as shown in Figure 3, described the first linkage section 101, the second linkage section 102 and the 3rd linkage section 103 structure that is formed in one, described the first linkage section 101, the second linkage section 102 and the 3rd linkage section 103 are rectangle, described the second span W1 of linkage section 102 on first direction 11 is less than described the first linkage section 101 and span W2, the W3 of the 3rd linkage section 103 on first direction 11 respectively, and described the second linkage section is remained unchanged by the graphics area being cut perpendicular to described first direction and the determined plane of second direction.
In the time that flexible circuit board 100 is bent, due in a first direction, the second linkage section 102 has with respect to the first linkage section 101 and the less span of the second linkage section 103, can sustain the stress producing because of bending, therefore, can reduce described the first functional unit 200 and the second functional unit 300 with the suffered stress in the junction of described the first linkage section 101 and the 3rd linkage section 103, and then can prevent that the first functional unit 200 and the second functional unit 300 from peeling off or local shedding from described flexible circuit board 100, improve the performance of electronic product.
As shown in Figure 4, it is the sectional view of the flexible circuit board shown in Fig. 3 along A-A ' direction.Flexible circuit board 100 in present embodiment at least comprises dielectric substrate layer 112, metal level 111 and cover layer 110, described metal level 111 is between described dielectric substrate layer 112 and cover layer 110, and described the first functional unit 200 and the second functional unit 300 are electrically connected with described flexible circuit board 100 by described metal level 111 respectively.
In other embodiments, described flexible circuit board can also not comprise the 3rd linkage section, and described flexible circuit board can also have according to actual conditions other shape.
As shown in Figure 5 and Figure 6, it is front view and the stereogram of the flexible circuit board 200 of the second execution mode of the present utility model, described flexible circuit board 200 comprises the first linkage section 201 adjoining each other, the second linkage section 202 and the 3rd linkage section 203, the second linkage section 202 of described flexible circuit board 200 has the first opposing side 202a and the second side 202b along second direction 12, described the first side 202a and the second side 202b are upper to be reduced along first in described the first linkage section to the second linkage section (being first direction) direction gradually by the distance between two lines that cut through described first direction and the definite plane of second direction, then increase gradually.Described the second linkage section 202 also comprises first surface 202c and the second surface 202d of opposing setting, the length of the line segment that described first surface 202c and second surface 202d are cut perpendicular to first direction and the determined plane of second direction, along first reducing gradually in described the first linkage section to the second linkage section (being first direction) direction, then increases gradually; And described the second linkage section 202 is reduced along elder generation in described the first linkage section to the second linkage section (being first direction) direction gradually by the graphics area being cut through described second direction and perpendicular to described first direction and the determined plane of second direction, then increase gradually, or described graphics area is along remaining unchanged in described the first linkage section to the second linkage section (being first direction) direction.In the present embodiment, described the first side 202a and the second side 202b are respectively towards center line 13 indents of described the second linkage section 202, described center line 13 extends along second direction 12, and described the second linkage section 102 is that described the second linkage section 102 is along 1/2 of the maximum span W6 on first direction 11 along the minimum span W5 on first direction 11.
Arbitrary vertical interval between described first surface 202c and second surface 202d can remain unchanged, and described vertical interval also can first reduce gradually along second direction, after increase gradually.
In present embodiment, described second direction 12 is along the closure of described the first functional unit and described flexible circuit board, and vertical with described first direction 11, in other embodiments, also can first direction and second direction be set according to actual conditions.
Preferably, the thickness of described the first linkage section 201 is along reducing gradually in described the first linkage section 201 to second linkage sections 202 (being first direction) direction, the thickness of described the 3rd linkage section 203 is along reducing gradually in described the 3rd linkage section 203 to second linkage sections 202 (being first direction) direction, and described thickness direction is along perpendicular to described first direction and the determined plane of second direction., the graphics area that described the first linkage section 201 is cut by the plane of the first surface 202c perpendicular to the second linkage section 202 is along reducing gradually in the first linkage section 201 to second linkage sections 202 (being first direction) direction, described the first minimum graphics area is decreased to S1, the graphics area that described the 3rd linkage section 203 is cut by the plane of the first surface 202c perpendicular to the second linkage section 202 reduces gradually along the 3rd linkage section 203 to second linkage sections 202 (being first direction) direction, described the second minimum graphics area is decreased to S2, the graphics area that described the second linkage section 202 is cut by the plane of the first surface 202c perpendicular to the second linkage section 202 remains unchanged along first direction always, and it is the 3rd graphics area S3, the minimum graphics area S2 of described the first minimum graphics area S1 second equates, and be more than or equal to the 3rd graphics area S3.
As shown in Figure 7 and Figure 8, it is respectively the schematic diagram of flexible circuit board of the third execution mode that the utility model provides and the described flexible circuit board sectional view along B-B ' direction, described flexible circuit board 300 comprises the first linkage section 301, the second linkage section 302 and the 3rd linkage section 303 that adjoin each other and be electrical connected, and the ductility of described the second linkage section 302 is less than respectively the ductility of described the first linkage section 301 and the 3rd linkage section 303.
In present embodiment, described the first linkage section 301, the second linkage section 302 and the 3rd linkage section 303 structure that is formed in one, the span of one end that on described the second linkage section 302, one end of contiguous described the first linkage section 301 is less than described first linkage section 301 contiguous described the second linkage sections 302 on described third direction 14, the span of one end that on described the second linkage section 302, the span of one end of contiguous described the 3rd linkage section 303 on third direction 13 is less than described the 3rd linkage section 303 contiguous described the second linkage sections 302 on described third direction 13.
In present embodiment, the material that forms described flexible base, board 300 at least comprises insulated base material layer, metal level and cover layer, described metal level is between described insulated base material layer and described cover layer, and the first functional unit and the second functional unit are by described metal level and described flexible circuit board electrical connection (not shown).As shown in Figure 7 and Figure 8, on described the first linkage section 301 and the 3rd linkage section 303, be also coated with respectively hard functional layer 304, described hard functional layer 304 is positioned at the same side of flexible circuit board 300, and the thickness of described hard functional layer 304 equals the thickness of described the second linkage section 302, described thickness direction is perpendicular to described B-B ' direction and the determined plane of described third direction 13.
In another embodiment, described the first linkage section 301 reduces gradually along the thickness of fourth direction, the thickness of described the second linkage section 302 is the minimum thickness of described the first linkage section 301 along fourth direction, the even thickness setting of described the second linkage section 302, described the first linkage section 301 is 1/4 (not shown) of described the second linkage section 302 along the length of fourth direction along the length of fourth direction, and described third direction 14 is mutually vertical with fourth direction.
In other embodiments, described hard functional layer can also lay respectively at the opposing both sides of flexible circuit board, and the thickness of described hard functional layer can be greater than or less than the thickness of the second linkage section, and also can not limit the first linkage section, the second linkage section and the span of the 3rd linkage section on third direction; In other embodiments, can also flexibility function layer be set on the second linkage section, the thickness of described flexibility function layer is less than the thickness of described hard functional layer.
In present embodiment by hard functional layer being set on the first linkage section and the 3rd linkage section, make the ductility of the second linkage section be less than the ductility of the first linkage section and the 3rd linkage section, can reduce described the first functional unit and the second functional unit respectively with the suffered stress in the junction of described the first linkage section and the 3rd linkage section, and then can prevent that the first functional unit and the second functional unit from peeling off or local shedding from described flexible circuit board, improve the performance of electronic product.
The preferred embodiments of the flexible circuit board providing for the utility model above; can not be interpreted as the restriction to the utility model rights protection scope; those skilled in the art should know; without departing from the concept of the premise utility; also can do multiple improvement or replacement; these all improvement or replacement all should be within the scope of rights protections of the present utility model, and rights protection scope of the present utility model should be as the criterion with claim.
Claims (10)
1. a flexible circuit board, be used for connecting one first functional unit, it at least comprises one first linkage section adjacent and that be electrical connected and one second linkage section, described the first linkage section is for being connected with described the first functional unit, and on described the second linkage section, one end of contiguous described the first linkage section span on a first direction is less than one end that described the first linkage section is close to described the second linkage section span on described first direction.
2. flexible circuit board as claimed in claim 1, it is characterized in that: described flexible circuit board also comprises the 3rd linkage section, described the 3rd linkage section is electrical connected by described the second linkage section and described the first linkage section, described the 3rd linkage section is for being connected with one second functional unit, and on described the second linkage section, the span in a first direction of one end of contiguous described the 3rd linkage section is less than one end that described the 3rd linkage section is close to described the second linkage section span on described first direction.
3. flexible circuit board as claimed in claim 2, it is characterized in that: described the first linkage section, the second linkage section and the 3rd linkage section structure that is formed in one, the span of one end that described the second linkage section arbitrary span is in a first direction less than described the first linkage section and contiguous described the second linkage section of the 3rd linkage section respectively on described first direction.
4. flexible circuit board as claimed in claim 3, it is characterized in that: described the second linkage section has the first opposing side and the second side along second direction, on described the first side and the second side, reduced gradually along first direction elder generation by the distance between two lines that cut through described first direction and the definite plane of second direction, then increase gradually, described the second linkage section along the minimum span on first direction be described the second linkage section along on first direction maximum span 1/2.
5. flexible circuit board as claimed in claim 3, it is characterized in that: described the second linkage section also has opposing first surface and second surface, the graphics area that described first surface is cut perpendicular to first direction and the determined plane of second direction first reduces gradually, then increases gradually.
6. flexible circuit board as claimed in claim 2, it is characterized in that: the material that forms described flexible base, board at least comprises insulated base material layer, metal level and cover layer, described metal level is between described insulated base material layer and described cover layer, and described the first functional unit and described the second functional unit are by described metal level and the electrical connection of described flexible circuit board.
7. a flexible circuit board, be used for connecting the first functional unit, it at least comprises one first linkage section adjacent and that be electrical connected and one second linkage section, described the first linkage section is for being connected with described the first functional unit, and the ductility of described the second linkage section is greater than respectively the ductility of described the first linkage section and the 3rd linkage section.
8. flexible circuit board as claimed in claim 7, it is characterized in that: described flexible circuit board also comprises the 3rd linkage section, described the 3rd linkage section is electrical connected by described the second linkage section and described the first linkage section, described the 3rd linkage section is for being connected with one second functional unit, and the span of one end that on described the second linkage section, one end of contiguous described the first linkage section is less than contiguous described the second linkage section of described the first linkage section on third direction, the span of one end that on described the second linkage section, the span of one end of contiguous described the 3rd linkage section on third direction is less than contiguous described the second linkage section of described the 3rd linkage section on described third direction, described the first linkage section, the second linkage section and the 3rd linkage section structure that is formed in one, the material that forms described flexible base, board at least comprises insulated base material layer, metal level and cover layer, described metal level is between described insulated base material layer and described cover layer, described the first functional unit and described the second functional unit are by described metal level and the electrical connection of described flexible circuit board.
9. flexible circuit board as claimed in claim 8, is characterized in that: on described the first linkage section and the 3rd linkage section, be also coated with respectively hard functional layer, the thickness of described hard functional layer is more than or equal to the thickness at arbitrary place on the second linkage section.
10. flexible circuit board as claimed in claim 7, it is characterized in that: described the first linkage section reduces gradually along the thickness of fourth direction, the thickness of described the second linkage section is the minimum thickness of described the first linkage section along fourth direction, the even thickness setting of described the second linkage section, described the first linkage section is described the second linkage section along 1/4 of the length of fourth direction along the length of fourth direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320616998.9U CN203645907U (en) | 2013-09-27 | 2013-09-27 | Flexible printed circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320616998.9U CN203645907U (en) | 2013-09-27 | 2013-09-27 | Flexible printed circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203645907U true CN203645907U (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320616998.9U Expired - Lifetime CN203645907U (en) | 2013-09-27 | 2013-09-27 | Flexible printed circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203645907U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491705A (en) * | 2013-09-27 | 2014-01-01 | 深圳莱宝高科技股份有限公司 | Flexible circuit board |
-
2013
- 2013-09-27 CN CN201320616998.9U patent/CN203645907U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103491705A (en) * | 2013-09-27 | 2014-01-01 | 深圳莱宝高科技股份有限公司 | Flexible circuit board |
| CN103491705B (en) * | 2013-09-27 | 2017-04-05 | 深圳莱宝高科技股份有限公司 | A kind of flexible circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |
|
| CX01 | Expiry of patent term |